Timeless Peel (30% Retinol and 20% Lactic Acid) 1-3 days reddening, then peeling for up to 7 days. Eliminates 80% of precancerous cells!: $300 and up, depending on layering. Designed to brighten, lighten, and tighten! Includes Prep Kit and Gentle Waves LED treatment ($145 value).